Effect of peripheral nerve action currents on magnetic resonance imaging.
Effect of peripheral nerve action currents on magnetic resonance imaging.
复制标题
周围神经动作电流对磁共振成像的影响。
DOI：
10.1109/iembs.2009.5332921
复制
发表时间：
2009
期刊：
影响因子：
--
通讯作者：
Roth,BradleyJ
中科院分区：
文献类型：
--
作者：
Wijesinghe,Ranjith;Roth,BradleyJ
许多研究人员尝试使用磁共振成像(MRI)来直接检测神经电流。外周神经的动作电流会产生自己的磁场，从而导致自旋的相位发生变化。我们在这篇论文中的目标是使用测量的神经磁场来估计磁共振信号中产生的相移。我们研究了三个案例：鱿鱼的巨大轴突，青蛙的坐骨神经和人类的正中神经。在每种情况下，相移都远远小于1度，而且用目前的技术很难测量。
Many researchers have attempted to detect neural currents directly using magnetic resonance imaging (MRI). The action currents of a peripheral nerve create their own magnetic field that can cause the phase of the spins to change. Our goal in this paper is to use the measured magnetic field of a nerve to estimate the resulting phase shift in the magnetic resonance signal. We examine three cases: the squid giant axon, the frog sciatic nerve, and the human median nerve. In each case, the phase shift is much less than one degree, and will be very difficult to measure with current technology.